NEET Physics Nuclei Questions Solved


The decay constant of a radio isotope is λ. If A1 and A2 are its activities at times t1 and t2 respectively, the number of nuclei which have decayed during the time (t1-t2)

(a) A1t1-A2t2                                       (b) A1-A2

(c) (A1-A2)λ                                         (d) λ(A1-A2) 

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